MCQ
Work done by a fielder in catching a ball is:
- AZero
- BPositive
- CNegative
- DNone of these
Explanation:
To catch a ball, the fielder has to stop the ball. This means, force is applied against the motion of the ball. So, the fielder applied the force on the ball and the ball moves in the direction opposite to the direction of force till the ball comes to rest. Thus work is negative.
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Natural system of classification employs:
Which one of the following species of honey bee is an Italian species?
In the relation $\text{F}=\text{G}\times\text{M}\times\frac{\text{m}}{\text{d}^2},$ the quantity G:
Option: